Rail Fundamentals in

12d Model Training
Did you know there is an Authorised 12d Model Training Provider?
The Civil and Surveying Institute offers free and cost-effective training, including access to 12d Model Student Software for 3–12 months (depending on the course), so you can practise and apply these rail design workflows with confidence.
Explore training options at: https://www.civilandsurveying.com/civ...

In this 12d Model Tech Forum session, Alistair McCrudden introduces the fundamentals of rail design in 12d Model, focusing on the core Track Tools used for real-world railway projects.
With over 40 years of industry experience and more than 25 years working with 12d Model, Alistair walks through key rail design workflows, highlighting both beginner-friendly concepts and valuable tips for experienced users.

What you’ll learn in this session:
• Overview of the 12d Model Track Toolbar
• Calculating rail centre lines from surveyed left and right rails
• Using regression and best-fit geometry for rail alignments
• Creating and managing super alignment strings
• Designing and placing rail turnouts
• Understanding turnout geometry and placement best practices
• Creating and interpreting slew diagrams
• Calculating and applying Kent (rail superelevation)
• Plotting rails with correct 3D geometry and extrusion
• Labelling rail alignments and transitions
• Building and checking structure gauges for clash detection
• Introduction to change equalities in rail design

This session is ideal for rail designers, civil engineers, surveyors, and 12d Model users who are starting with rail workflows or looking to better understand the tools available for track design, turnouts, and geometry validation.

About the Tech Forum
12d Tech Forum sessions provide expert-led demonstrations, practical workflows, and real project insights to help users get more value from 12d Model across civil, rail, and surveying projects.

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